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Diffstat (limited to 'compiler/elf_writer_debug.cc')
-rw-r--r--compiler/elf_writer_debug.cc66
1 files changed, 53 insertions, 13 deletions
diff --git a/compiler/elf_writer_debug.cc b/compiler/elf_writer_debug.cc
index 2bc8c89f73..315a8334b1 100644
--- a/compiler/elf_writer_debug.cc
+++ b/compiler/elf_writer_debug.cc
@@ -22,16 +22,17 @@
#include "base/casts.h"
#include "base/stl_util.h"
#include "compiled_method.h"
-#include "driver/compiler_driver.h"
#include "dex_file-inl.h"
+#include "driver/compiler_driver.h"
#include "dwarf/dedup_vector.h"
#include "dwarf/headers.h"
#include "dwarf/method_debug_info.h"
#include "dwarf/register.h"
#include "elf_builder.h"
+#include "linker/vector_output_stream.h"
#include "oat_writer.h"
-#include "utils.h"
#include "stack_map.h"
+#include "utils.h"
namespace art {
namespace dwarf {
@@ -234,7 +235,9 @@ void WriteCFISection(ElfBuilder<ElfTypes>* builder,
{
cfi_section->Start();
const bool is64bit = Is64BitInstructionSet(builder->GetIsa());
- const Elf_Addr text_address = builder->GetText()->GetAddress();
+ const Elf_Addr text_address = builder->GetText()->Exists()
+ ? builder->GetText()->GetAddress()
+ : 0;
const Elf_Addr cfi_address = cfi_section->GetAddress();
const Elf_Addr cie_address = cfi_address;
Elf_Addr buffer_address = cfi_address;
@@ -305,8 +308,8 @@ namespace {
struct CompilationUnit {
std::vector<const MethodDebugInfo*> methods_;
size_t debug_line_offset_ = 0;
- uint32_t low_pc_ = 0xFFFFFFFFU;
- uint32_t high_pc_ = 0;
+ uintptr_t low_pc_ = std::numeric_limits<uintptr_t>::max();
+ uintptr_t high_pc_ = 0;
};
typedef std::vector<DexFile::LocalInfo> LocalInfos;
@@ -439,14 +442,17 @@ class DebugInfoWriter {
void Write(const CompilationUnit& compilation_unit) {
CHECK(!compilation_unit.methods_.empty());
- const Elf_Addr text_address = owner_->builder_->GetText()->GetAddress();
+ const Elf_Addr text_address = owner_->builder_->GetText()->Exists()
+ ? owner_->builder_->GetText()->GetAddress()
+ : 0;
+ const uintptr_t cu_size = compilation_unit.high_pc_ - compilation_unit.low_pc_;
info_.StartTag(DW_TAG_compile_unit);
info_.WriteStrp(DW_AT_producer, owner_->WriteString("Android dex2oat"));
info_.WriteData1(DW_AT_language, DW_LANG_Java);
info_.WriteStrp(DW_AT_comp_dir, owner_->WriteString("$JAVA_SRC_ROOT"));
info_.WriteAddr(DW_AT_low_pc, text_address + compilation_unit.low_pc_);
- info_.WriteUdata(DW_AT_high_pc, compilation_unit.high_pc_ - compilation_unit.low_pc_);
+ info_.WriteUdata(DW_AT_high_pc, dchecked_integral_cast<uint32_t>(cu_size));
info_.WriteSecOffset(DW_AT_stmt_list, compilation_unit.debug_line_offset_);
const char* last_dex_class_desc = nullptr;
@@ -476,7 +482,7 @@ class DebugInfoWriter {
info_.StartTag(DW_TAG_subprogram);
WriteName(dex->GetMethodName(dex_method));
info_.WriteAddr(DW_AT_low_pc, text_address + mi->low_pc_);
- info_.WriteUdata(DW_AT_high_pc, mi->high_pc_ - mi->low_pc_);
+ info_.WriteUdata(DW_AT_high_pc, dchecked_integral_cast<uint32_t>(mi->high_pc_-mi->low_pc_));
uint8_t frame_base[] = { DW_OP_call_frame_cfa };
info_.WriteExprLoc(DW_AT_frame_base, &frame_base, sizeof(frame_base));
WriteLazyType(dex->GetReturnTypeDescriptor(dex_proto));
@@ -924,7 +930,9 @@ class DebugLineWriter {
// Returns the number of bytes written.
size_t WriteCompilationUnit(CompilationUnit& compilation_unit) {
const bool is64bit = Is64BitInstructionSet(builder_->GetIsa());
- const Elf_Addr text_address = builder_->GetText()->GetAddress();
+ const Elf_Addr text_address = builder_->GetText()->Exists()
+ ? builder_->GetText()->GetAddress()
+ : 0;
compilation_unit.debug_line_offset_ = builder_->GetDebugLine()->GetSize();
@@ -1173,11 +1181,13 @@ void WriteDebugSymbols(ElfBuilder<ElfTypes>* builder,
name += " [DEDUPED]";
}
+ const auto* text = builder->GetText()->Exists() ? builder->GetText() : nullptr;
+ const bool is_relative = (text != nullptr);
uint32_t low_pc = info.low_pc_;
// Add in code delta, e.g., thumb bit 0 for Thumb2 code.
low_pc += info.compiled_method_->CodeDelta();
- symtab->Add(strtab->Write(name), builder->GetText(), low_pc,
- true, info.high_pc_ - info.low_pc_, STB_GLOBAL, STT_FUNC);
+ symtab->Add(strtab->Write(name), text, low_pc,
+ is_relative, info.high_pc_ - info.low_pc_, STB_GLOBAL, STT_FUNC);
// Conforming to aaelf, add $t mapping symbol to indicate start of a sequence of thumb2
// instructions, so that disassembler tools can correctly disassemble.
@@ -1185,8 +1195,8 @@ void WriteDebugSymbols(ElfBuilder<ElfTypes>* builder,
// requires it to match function symbol. Just address 0 does not work.
if (info.compiled_method_->GetInstructionSet() == kThumb2) {
if (!generated_mapping_symbol || !kGenerateSingleArmMappingSymbol) {
- symtab->Add(strtab->Write("$t"), builder->GetText(), info.low_pc_ & ~1,
- true, 0, STB_LOCAL, STT_NOTYPE);
+ symtab->Add(strtab->Write("$t"), text, info.low_pc_ & ~1,
+ is_relative, 0, STB_LOCAL, STT_NOTYPE);
generated_mapping_symbol = true;
}
}
@@ -1214,6 +1224,36 @@ void WriteDebugInfo(ElfBuilder<ElfTypes>* builder,
}
}
+template <typename ElfTypes>
+static ArrayRef<const uint8_t> WriteDebugElfFileInternal(
+ const dwarf::MethodDebugInfo& method_info) {
+ const InstructionSet isa = method_info.compiled_method_->GetInstructionSet();
+ std::vector<uint8_t> buffer;
+ buffer.reserve(KB);
+ VectorOutputStream out("Debug ELF file", &buffer);
+ std::unique_ptr<ElfBuilder<ElfTypes>> builder(new ElfBuilder<ElfTypes>(isa, &out));
+ builder->Start();
+ WriteDebugInfo(builder.get(),
+ ArrayRef<const MethodDebugInfo>(&method_info, 1),
+ DW_DEBUG_FRAME_FORMAT);
+ builder->End();
+ CHECK(builder->Good());
+ // Make a copy of the buffer. We want to shrink it anyway.
+ uint8_t* result = new uint8_t[buffer.size()];
+ CHECK(result != nullptr);
+ memcpy(result, buffer.data(), buffer.size());
+ return ArrayRef<const uint8_t>(result, buffer.size());
+}
+
+ArrayRef<const uint8_t> WriteDebugElfFile(const dwarf::MethodDebugInfo& method_info) {
+ const InstructionSet isa = method_info.compiled_method_->GetInstructionSet();
+ if (Is64BitInstructionSet(isa)) {
+ return WriteDebugElfFileInternal<ElfTypes64>(method_info);
+ } else {
+ return WriteDebugElfFileInternal<ElfTypes32>(method_info);
+ }
+}
+
// Explicit instantiations
template void WriteDebugInfo<ElfTypes32>(
ElfBuilder<ElfTypes32>* builder,
generated by cgit v1.2.3-59-g8ed1b (git 2.39.0) at 2025-10-20 21:10:42 +0000